Masked dem=795 rep=615

Unmasked=297dem 427 rep

Total dem= 1092 rep-=1042

1.Provide a point estimate for the population proportion of Democrats who wore a mask to help prevent the spread of COVID-19 at the time of the survey.

2.Construct a 90% confidence interval for the population proportion of Democrats who wore a mask to help prevent the spread of COVID-19 at the time of the survey.

4.Two STT200 students, Don Diego and Elena Montero, want to estimate the population proportion of Democrats who wear a mask to help prevent the spread of COVID-19 at 90% confidence with a margin of error no more than 1.49%. How many Democrats would they need to survey to help? Use the data above as a preliminary sample.